Door lock



Aug. 25, 1942. o. c. LxresoNA noon Lox Filed. oct. 1e. 194e Patented Aug. 25, 1942 UNITED STATES PATENT OFFICE DOOR LOCK Otto C. Larson, Brooklyn, N. Y.

Application Getober 16, 1940, Serial No. 361,402

(Cl. V-143) 11 Claims.

This invention relates to door locks, and particularly to a lock having means providing key operation oi the lock into deadlock position eX- ternally of a room or compartment, thus .preventing an unauthorized person, gaining access to a room or .compartment through .a window or other entrance, from leaving the `compartment through the door controlled by said lock; and the object of the invention is to provide a lock of the character described wherein the lock bolt may be moved into open position by either the knob or the key actuated mechanism when the bolt is in normal locked position, and further whereby the .bolt may .be moved into the deadlock position and opened from the deadlock position solely by the key operating mechanism of the lock; a further object being to provide a lock of the .character described employing two bolt engaging and operating elements rotatable about the lock spindle individually and .collectively in controlling the operation of the lock and in retaining the inner knob against rotary movement to release the bolt when the latter is in deadlocked position; and with these and other objects in view, the invention consists in a lock con- Fig. 2 is a partial section on the line 2-2 of Fig. 1.

Fig. 3 is a partial section on the line 3-3 of lFig. 2.

Fig. 4 is la cross section substantially on the line 4 4 oi Fig. 2.

Fig. 5 is a view substantially similar to Fig. 2 showing only a part oi the .construction an'd with parts in a different position; and

Fig. 6 is a view similar to Fig. 5 showing the parts in deadlock position.

In Fig. 1 of the drawing, I9 represents a part of a door frame to which the bolt receiving keeper II of the lock is secured. At I2 is indicated part of a door, apertured as seen at I 3 to receive the cylinder I4 of a more or less conventional p cylinder lock, and into which cylinder a 'conventional key I5 is insertable to control the operation of the lock spindle I6. The lock spindle I6 extends into the casing I'I as well as into the tubular portion I8 of the inner knob I9 which ,controls the operation or" the bolt 2|! from the inside of the room or compartment controlled by the door I2. On the inner surface of the lock .casing II is a removable plate 2|, and screws 22 are :passed through this plate and into extensions 23 `on the cylinder I4 in supporting the cylinder in position within the aperture I3.

The bolt 20 has an oset portion 24 within the lock casing, operating upon a rod 25 arranged between two posts 26a of a slide 26 mounted and guided in the teasing Il as seen in Fig. 2. The extension 24 is free .to slide on the rod against the action of a spring 2'I arranged thereon in the automatic latching of the bolt 20 inthe operation of closing the door. The spring serves to hold the bolt in the normal protracted position seen in Fig. 1. On the offset portion 24 is a rearwardly extending plate 28 which is arranged between the rod 25 and the slide 26. This aplate has an extension or raised portion 29 having a rounded or cam surface 30 andan opposed straight surface 3 I.

On vthe slide 26 is a cam surface 32, by means of which the bolt may be retracted from an eX- tended or locked position. These various lock mechanisms as described form no particular part of the present invention and are ldescribed to give the general assemblage of mechanism necessary to understand the new structural features Iwhi=chiorm the subject matter of the present invention. Other details of the lock are omitted simply to avoid unnecessary detail description.

Another conventional part of the lock comprises the lock spindle receiving sleeve 33 which is freely rotatable in the detachable plate 2 I, and has a slot for receiving the spindle I6, and also 'carries at its inner enda ring 34 having projecting lugs 35. The lugs 35 normally operate in :conjunction with a single actuating sleeve arranged upon the portion I8 of the knob I9, but instead of employing this usual mechanism or sleeve. I employ two lock control elements 36 .and 3l. These elements comprise two substantially disc-like members, one having an extending arm 38 for operative engagement with the extension 29, .and the other having a corresponding arm 39, a 'conventional hook arm 40, and a lug 4I. The latter represents an elefrnent substantially similar to the conventional element of this type and Vkind employed in other locks.Y The element 36 is keyed to the sleeve I8 by a pin or otherwise as seen at I42, whereas the element 31 is retained against displacement from the sleeve but is free to rotate thereon and with respect to the element 36. The lug 4I extends in the direction of the two lugs 35 and is `arranged in the path of rotation of said lugs so that rotation of the key actuated sleeve 33 will operate to move the lock bolt 20 from the normal latching or lock position shown'in Fig. 1 into open position; further, to move the bolt 26 into the extended or deadlock position shown in Fig. 6 and to then withdraw the bolt from the deadlock position in the manner illustrated in Fig. 5. The element 36, however, which is actuated through the knob I9, is only capable of-with drawing the bolt 20 from Vthe position 'shown in Fig. 1 to an open position. In'thelock cas'ig I1 is arranged a stop screw 43 Whichfchecks the movement of the element 31, particularly when the parts are-in 'the 'lposition'f shown in`Fig; 6 of -.the drawing.

' It will "be understood-that'locks of the't-ype-'and vkind under Vc'onsideration'in addition to being ap- `plicable to doors controlling rooms or compart- Vv"ments, entrances to'buildings,` Ahomes'and the like,

Y are also Yapplicab'leto varioustypes and kinds'of apparatus; and' particulary will be useful in con- 1 Ijunction'withmotor vehicleswhere'the doors of the vehicles'm'ay be all'ilockcd through the medium of look mechanismso'f'the 'generalltype under- 'consideration`v It'willthus'be apparent that thelmere. breaking ofa.l window of the vehicle "willnot give access tothe interior ofthe vehicle, except through thebroken window, which act is boundv to bei deduced in the event of ther attempted' theftofthecar. vIn 'other words, generally` speaking, thel movement of aY bolt into deadlock "position 'through' the `key `actuated f f' mechanism .externally ofany' compartment will Y renderf it'impossible. toopen .the door from'the interior'of the compartment 'whereas'V when the lock is 'infitsnormal.. position; "in `other"words when notfin'the deadlockpo'siti'on; the' doormay be. 'opened'and closed from thelinteri'or 'as in other more conventional locks.

Inthe normal'position oflthe lock, asis shown 'in"`Fig,V 1` oflthe 'drawing-g' as well asin Fig. 2, the

- bolt-'26' niay be drawn inwardly 'to open th'eidoor, Y -eithery through the'factuation'r of thelkey4 oper-J ated element 31`externally`ofthe door, ori bythe knob /I9` internally. 'of the' door. "Furthermore, the bolt f20 'may`m've 'inwardlyf and" outwardly automaticallyY inthe operation' of closing the` door as in Aother lock constructions. "When` itvis desiredy to movefthe bolt"20 into the deadlockf position shown in Fig. 6. ofthe drawing, thekey I5 is inserted into the cylinderandv the element 31 isA rotated from the` positionlshown "ini Fig. 2 into'the position shown in Fig; 6. L In theflatter Y pos'itionfthe end: of the arm 38' is brought` beneath a straight surface-29alonthe extension I '29,y as will appear-1in` Fig: 6 of 'the drawing, thus preventing yrotation ofthe knob I9-inbolt withdrawing direction. YIt will appear, however, that locked position vas is'indicated in'Fig. 5 of the drawing.

' In various'types andkinds of locks means 'are usually provided to support the bolt in the inwardly drawn or unlocked position, but these means have been omitted in order to simplify the present illustration, bearing in mind that these 5 things in themselves form no part of the present invention, and furthermore on different types and kinds of apparatus, different means are employed; particularly when the locks are incorporated in conjunction with handle members l members controllingdooroperation. It will of course be apparent that the lugs 435 cooperate with the upstanding lug 4I on the element 31 in controlling the key operation of this element, as will appear from a consideration of Figs. 2,

fia-and 6 of the drawing.

The ring 34 may be said to be a clutch member placing the spindle I6 in operative engagement with the Vdisc-like lelement 31 by engagement of thelugs 35 of said clutch with the lug 4I on said element. It will also appear from the lock construction disclosed rthatfthe two bolt' actuating elements 3G and 31' rotate withfrespe'ct to acommonl axis; that `isto "say, around vthe `spindle I6 MHavingfully'describedmy'inventiom what I claim as ynewand' desireto v'secure' `by Letters Patent,'is:

1 1.' A lock Yof the' class'describ'ed comprising a casing, a bolt'movable'into 'andi out of thecasing, v aY key actuated'spin'dle, a'manually loperated knob, twol bolt actuating elementsjone actuated by said knob Aand the other bysaid spindle, both of `said elements operatively'V engaging thel bolt `toV draw the bolt inwardly into unlockedposition, the

spindle actuated element only, operatively engaging the bolt to'move the sameiinto and out of ldeadlock position; said elements comprising disclike membersrotatablev about` a"'common axis,

'each member 'having an Varm :operatively` engag- 40 Aing's'aid bolt, and' oneof said members'ineluding a second arm enga'ging'the bolt tom'ove the'same into and' out of l deadlock position.

Y2. A lock of the `classdes`cribed comprising a casing, a bolt movable intoand out of'thefcasing,

a key-a'ctuated spindle,4 a .manually operated knob, two bolt actuating eleme'nts, oneA v'actuated by'said knob and the other' by said spindle, both 'of` said elements operatively 1 engaging ithebolt to draw the bolt inwardly into""unlocked Sposition, y'the spindle actuated elementonly, voperlativ'elyv engaging thebolt-to move 'thelsa'me into Y andout of deadlock position, said velements com- Y T prisi'ngY disc-like members r'otatable'about a com- 'mon axis, eachmember 'having ania'r'mo'peratively engaging said bolt, one of said 'members "including asecondlarm engaging Vtheibolt to vmove the same'intoand`outof deadlck position, a projecting'lug?on'l` thelastmer'tioned memberg'and a"clutch"plate keyedto'the spindle and operatively engaging the lugon' said lastl mentioned member.

3. A lock of the class described comprising a casing, a bolt movable in the'casi'ngr toA -be extended through one wall thereof;A two 'disclike l vactuating elements in`theca'si-ng rotatable about a' comm-on axis operatively? engaging' the -bolt to move the same intoinoperative position,` -keyless means ifor-operating o'neosaid elements, key actuated means "forl'actuatingthe 'other. of Ssaid elements, said`lastnamed means compris- "ing a clutch -ringg andtmeans whereby'. ther-otaf tion o'f said ring in :one direction will actuatef' the bolt to extend the" 'sa'mef into" deadlock position.

4.".A`l'o'ck of thef.class "described comprising a tended through one wall thereof, two disc-like actuating elements in the casing rotatable about a common axis in operatively engaging the bolt to move the same into inoperative position, keyless means for operating one of said elements, key actuated means for actuating the other of said elements, said last named means comprising a clutch ring, means whereby the rotation of said ring in one direction will actuate the bolt to extend the same into deadlock position, and means rendering the first named element inoperative when the bolt is in deadlock position.

5. A lock of the class described comprising a casing, a bolt movable inwardly and outwardly through the casing, two bolt actuating elements rotatable about a common axis, manually actuated means for operating one of said elements for moving the bolt into the casing into unlocked position, key actuated means operating the other of said elements, and said last named means including dual means engaging said bolt for selectively retracting said bolt to unlocked position and projecting the same to deadlock position.

6. A lock of the class described comprising a casing, a bolt movable inwardly and outwardly through the casing, two bolt actuating elements rotatable about a common axis, manually actuated means for operating one of said elements ior moving the bolt into the casing into unlocked position, key actuated means operating the other of said elements, said last named means including dual means engaging said bolt for selectively retracting said bolt to unlocked position and projecting the same to deadlock position, and cooperating means on said bolt and rst named element, whereby movement of the bolt into deadlock position will move said element out of actuating engagement with said bolt.

7. A lock of the class described comprising a casing, a bolt movable inwardly and outwardly through the casing, two bolt actuating elements rotatable about a common axis, manually actuated means for operating one of said elements, key actuated means for operating the other oi said elements, means on said last named element engaging said bolt for moving the same into unlocked position, other means on said element engaging said bolt for moving the same into deadlock position, and said last named means in the normal locked position of the bolt forming a stop preventing movement of the bolt into deadlock position by said manually actuated means.

8. In a lock having an automatically actuated latch bolt and independent key operated and manually operated means for moving the bolt into inoperative position, a pair of bolt actuating elements, one element being actuated through said manually operated means and the other through said key operated means, and means on said last mentioned element directly engaging said bolt to extend the bolt into deadlock position and to return the bolt from deadlock to normal position.

9. The combination with a door lock having manual means for moving the bolt of the lock into inoperative position from the inner side of a door, of key actuated means independent of said first named means for operating said bolt at the external side of the door, said key actuated means including an element having a projecting member for engagement with said bolt to move the same into open position, other means on said element cooperating with said bolt to move the same into and out of deadlock position from the external side of the door, and said last named means further cooperating with said ybolt to prevent movement of the bolt to deadlock `positon by actuation of said first named means.

l0. A lock of the class described comprising a casing, a bolt movable in the casing to be extended through one wall thereof, two disc-like actuating elements in the casing rotatable about a common axis and operatively engaging the bolt to move the same into inoperative position, keyless means for operating one of said elements, key actuated means for operating the other of said element, and said last named element including means directly engaging said bolt for moving the bolt into deadlock position.

11. The combination with a lock having a latch bolt, of two bolt actuating elements arranged side =by side and operatively engaging the bolt to move the same into unlocked position, independent means for actuating said elements, and at least one of said elements directly engaging said -bolt for extending the bolt into deadlock position and for withdrawing the bolt from said deadlock position.

OTTO C. LARSON. 

